Few men in the British film industry have had more experience of film production than Mr. Pearson, who gives the fourth talk in this series tonight. He has worked for companies so famous in the early history of motion pictures as Gaumont, Pathe, and Samuelson, as well as his own firm, Welsh Pearson Elder; he has made pictures in England, France. America, and the West Indies; and among the sixty odd films with which he has been associated are Auld Lang Syne, Huntingtower, Squibbs, Maud Em'ly, Garryowen, and A Study in Scarlet, which have brought into the film business such stars and authors as Betty Balfour, Sir Harry Lauder, John Buchan, Conan Doyle, and H. de Vere Stacpoole.